1 /* $NetBSD: procfs_status.c,v 1.17 2001/11/10 13:33:44 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1993 Jan-Simon Pendry 5 * Copyright (c) 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Jan-Simon Pendry. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: procfs_status.c,v 1.17 2001/11/10 13:33:44 lukem Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/time.h> 48 #include <sys/kernel.h> 49 #include <sys/proc.h> 50 #include <sys/vnode.h> 51 #include <sys/ioctl.h> 52 #include <sys/tty.h> 53 #include <sys/resource.h> 54 #include <sys/resourcevar.h> 55 #include <miscfs/procfs/procfs.h> 56 57 int 58 procfs_dostatus(curp, p, pfs, uio) 59 struct proc *curp; 60 struct proc *p; 61 struct pfsnode *pfs; 62 struct uio *uio; 63 { 64 struct session *sess; 65 struct tty *tp; 66 struct ucred *cr; 67 char *ps; 68 char *sep; 69 int pid, ppid, pgid, sid; 70 int i; 71 int xlen; 72 int error; 73 char psbuf[256+MAXHOSTNAMELEN]; /* XXX - conservative */ 74 75 if (uio->uio_rw != UIO_READ) 76 return (EOPNOTSUPP); 77 78 pid = p->p_pid; 79 ppid = p->p_pptr ? p->p_pptr->p_pid : 0, 80 pgid = p->p_pgrp->pg_id; 81 sess = p->p_pgrp->pg_session; 82 sid = sess->s_sid; 83 84 /* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg uid gid groups ... */ 85 86 ps = psbuf; 87 memcpy(ps, p->p_comm, MAXCOMLEN); 88 ps[MAXCOMLEN] = '\0'; 89 ps += strlen(ps); 90 ps += sprintf(ps, " %d %d %d %d ", pid, ppid, pgid, sid); 91 92 if ((p->p_flag&P_CONTROLT) && (tp = sess->s_ttyp)) 93 ps += sprintf(ps, "%d,%d ", major(tp->t_dev), 94 minor(tp->t_dev)); 95 else 96 ps += sprintf(ps, "%d,%d ", -1, -1); 97 98 sep = ""; 99 if (sess->s_ttyvp) { 100 ps += sprintf(ps, "%sctty", sep); 101 sep = ","; 102 } 103 if (SESS_LEADER(p)) { 104 ps += sprintf(ps, "%ssldr", sep); 105 sep = ","; 106 } 107 if (*sep != ',') 108 ps += sprintf(ps, "noflags"); 109 110 if (p->p_flag & P_INMEM) 111 ps += sprintf(ps, " %ld,%ld", 112 p->p_stats->p_start.tv_sec, 113 p->p_stats->p_start.tv_usec); 114 else 115 ps += sprintf(ps, " -1,-1"); 116 117 { 118 struct timeval ut, st; 119 120 calcru(p, &ut, &st, (void *) 0); 121 ps += sprintf(ps, " %ld,%ld %ld,%ld", 122 ut.tv_sec, 123 ut.tv_usec, 124 st.tv_sec, 125 st.tv_usec); 126 } 127 128 ps += sprintf(ps, " %s", 129 (p->p_wchan && p->p_wmesg) ? p->p_wmesg : "nochan"); 130 131 cr = p->p_ucred; 132 133 ps += sprintf(ps, " %d", cr->cr_uid); 134 ps += sprintf(ps, " %d", cr->cr_gid); 135 for (i = 0; i < cr->cr_ngroups; i++) 136 ps += sprintf(ps, ",%d", cr->cr_groups[i]); 137 ps += sprintf(ps, "\n"); 138 139 xlen = ps - psbuf; 140 xlen -= uio->uio_offset; 141 ps = psbuf + uio->uio_offset; 142 xlen = imin(xlen, uio->uio_resid); 143 if (xlen <= 0) 144 error = 0; 145 else 146 error = uiomove(ps, xlen, uio); 147 148 return (error); 149 } 150